The wafer cleaving / glass breaking pliers are used to make clean breaks of silicon wafers, glass, quartz or thin ceramic tiles. They are also called glass pliers or running pliers. The pliers come with two sets of jaw inserts:- One soft set to break out over a the scored line. A white line on the nose of the pliers helps with alignment of the breaking line.- One flat metal set nipping along a parallel score line.Made of strong reinforced plastic, 152mm overall length.Silicon wafer chipsGlass strips